Christiaan Huygens' De Circuli Magnitudine Inventa

This is first page of De Circuli Magnitudine Inventa (On Finding the Magnitude of the Circle) (1654) by Christiaan Huygens (1629-1695).  In this work, Huygens considered various ways to determine the accurate measurement of a circle.

From the Rare Book Manuscript Collection at Columbia University.

Part of the Mathematical Treasures section of Loci: Convergence.

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